@droftarts Good Morning....
I already put the sensors with 4 wired conexion and i have the error again , i don´t know what is happend .......
The pt100 sensors read 2000 ºC when the heater is on every 10 or 15 seconds , is no always the same time , do u think is a interference problem???? , do u think a ferrita core is a possible solution??????
Thanks
Hello again.... 
I revised my wiring conexions and fixed it , but i have problems again , i remplaced my 307 lines with the parameters of the tunning but , when i try to use the heaters I have a notification "Header 2 fault: failed to read sensor: sensor shot to other wiring" , i resised wiring 2 or 3 times and i think was Ok, Do you think the cause could be the length of the cables or it could be something else??????
parameters of M307
M307 H1 R0.337 K0.402:0.000 D11.85 E1.35 B0
M307 H2 R0.238 K0.228:0.000 D8.78 E1.35 B0
Thanks
Ok... Thank You very much....
should i remove all this lines from my config.g???
M308 S1 P"spi.cs0" Y"rtd-max31865" ; configure sensor 1 as PT100 on pin spi.cs0
M950 H1 C"out1" T1 ; create nozzle heater output on !out1 and map it to sensor 1
M307 H1 B0 S1.00 V24.0 ; disable bang-bang mode for heater and set PWM limit
M303 H1 P1 S40 ; Heater 1 power 100% Temp limit 40º
M143 H1 P0 S50 A2 ; set temperature limit for heater 1 to 50C
M308 S2 P"spi.cs1" Y"rtd-max31865" ; configure sensor 2 as PT100 on pin spi.cs1
M950 H2 C"out2" T2 ; create nozzle heater output on !out2 and map it to sensor 2
M307 H2 B0 S1.00 V24.0 ; disable bang-bang mode for heater and set PWM limit
M303 H2 P1 S40 ; Heater 2 power 100% Temp limit 40º
M143 H2 P0 S50 A2 ; set temperature limit for heater 2 to 50C
Ok, I think i must remove this line from mi config.g and execute it like a comand in mi control panel , correct???
is this the execute form i must tu use ????
M303 H1 P1 S40
Thank you very much.....
I use this line in my config.g...
M303 H1 P1 S40 ; Heater 1 power 100% Temp limit 40º
But i don´t know this is correct or not.....
@jay_s_uk said in Need help to configure Heaters and Temperature sensors PT100:
M303
No... I don´t know how to use M303 comand.....